In steel structure projects, raw material quality is the foundation of structural safety, durability, and overall project success. As a professional steel structure solution provider, we treat material quality control as the starting point of our quality management system, ensuring full compliance with design requirements and international standards.
The following outlines how we control the quality of raw materials for steel structures throughout the project lifecycle.
1. Strict Supplier Qualification and Evaluation
We work only with approved steel suppliers, evaluating:
- Manufacturer qualifications and production capacity
- Applicable standards (GB / ASTM / EN)
- Quality management systems (ISO 9001)
- Supply stability and project track record
Reliable sourcing is the first step in quality assurance.
2. Clear Material Specifications and Design Requirements
At the project planning stage, we clearly define:
- Steel grades and standards (e.g., ASTM A36, A572, EN S355)
- Mechanical properties such as yield strength and tensile strength
- Surface condition, thickness tolerance, and technical requirements
All requirements are specified in drawings and technical documents.
3. Incoming Material Inspection and Documentation Review
Every batch of steel undergoes:
- Mill Test Certificate (MTC) verification
- Heat number and batch identification
- Visual inspection and dimensional checks
Ensuring consistency between documentation and physical materials.
4. Third-Party Testing and Re-Inspection
For critical projects or key structural members, we conduct:
- Chemical composition testing
- Mechanical performance testing
- Third-party inspections when required (SGS / BV / TÜV)
Providing additional assurance for clients and consultants.
5. Segregated Storage and Identification Control
Steel materials are stored and labeled according to:
- Grade
- Size
- Project number
Preventing material mixing or misuse during fabrication.
6. Full Traceability and Quality Records
Throughout procurement and fabrication, complete records are maintained:
- Material source and batch
- Inspection results
- Component usage location
Meeting international project traceability requirements.
7. Integrated Control with Fabrication and Coating Processes
Material quality control is integrated with:
- Welding procedures (WPS / PQR)
- Surface treatment and coating systems
- Installation requirements
Ensuring overall structural quality and long-term performance.
Consistent steel structure quality begins with strict raw material control. Guided by international standards and systematic management, we deliver reliable and verifiable steel structures for global projects.
We welcome you to choose our company to provide a complete one-stop solution covering material control, design, fabrication, and installation.